How to use ThatReturnsTrue method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactWheelHandler.js

Source: ReactWheelHandler.js Github

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1/​**2 * Copyright (c) 2015, Facebook, Inc.3 * All rights reserved.4 *5 * This source code is licensed under the BSD-style license found in the6 * LICENSE file in the root directory of this source tree. An additional grant7 * of patent rights can be found in the PATENTS file in the same directory.8 *9 * This is utility that hanlds onWheel events and calls provided wheel10 * callback with correct frame rate.11 *12 * @providesModule ReactWheelHandler13 * @typechecks14 */​15'use strict';16var emptyFunction = require('emptyFunction');17var normalizeWheel = require('normalizeWheel');18var requestAnimationFramePolyfill = require('requestAnimationFramePolyfill');19class ReactWheelHandler {20 /​**21 * onWheel is the callback that will be called with right frame rate if22 * any wheel events happened23 * onWheel should is to be called with two arguments: deltaX and deltaY in24 * this order25 */​26 constructor(27 /​*function*/​ onWheel,28 /​*boolean|function*/​ handleScrollX,29 /​*boolean|function*/​ handleScrollY,30 /​*?boolean|?function*/​ stopPropagation31 ) {32 this._animationFrameID = null;33 this._deltaX = 0;34 this._deltaY = 0;35 this._didWheel = this._didWheel.bind(this);36 if (typeof handleScrollX !== 'function') {37 handleScrollX = handleScrollX ?38 emptyFunction.thatReturnsTrue :39 emptyFunction.thatReturnsFalse;40 }41 if (typeof handleScrollY !== 'function') {42 handleScrollY = handleScrollY ?43 emptyFunction.thatReturnsTrue :44 emptyFunction.thatReturnsFalse;45 }46 if (typeof stopPropagation !== 'function') {47 stopPropagation = stopPropagation ?48 emptyFunction.thatReturnsTrue :49 emptyFunction.thatReturnsFalse;50 }51 this._handleScrollX = handleScrollX;52 this._handleScrollY = handleScrollY;53 this._stopPropagation = stopPropagation;54 this._onWheelCallback = onWheel;55 this.onWheel = this.onWheel.bind(this);56 }57 onWheel(/​*object*/​ event) {58 var normalizedEvent = normalizeWheel(event);59 var deltaX = this._deltaX + normalizedEvent.pixelX;60 var deltaY = this._deltaY + normalizedEvent.pixelY;61 var handleScrollX = this._handleScrollX(deltaX, deltaY);62 var handleScrollY = this._handleScrollY(deltaY, deltaX);63 if (!handleScrollX && !handleScrollY) {64 return;65 }66 this._deltaX += handleScrollX ? normalizedEvent.pixelX : 0;67 this._deltaY += handleScrollY ? normalizedEvent.pixelY : 0;68 event.preventDefault();69 var changed;70 if (this._deltaX !== 0 || this._deltaY !== 0) {71 if (this._stopPropagation()) {72 event.stopPropagation();73 }74 changed = true;75 }76 if (changed === true && this._animationFrameID === null) {77 this._animationFrameID = requestAnimationFramePolyfill(this._didWheel);78 }79 }80 _didWheel() {81 this._animationFrameID = null;82 this._onWheelCallback(this._deltaX, this._deltaY);83 this._deltaX = 0;84 this._deltaY = 0;85 }86}...

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SyntheticEvent.js

Source: SyntheticEvent.js Github

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1/​* */​ 2'use strict';3var PooledClass = require("./​PooledClass");4var assign = require("./​Object.assign");5var emptyFunction = require("./​emptyFunction");6var getEventTarget = require("./​getEventTarget");7var EventInterface = {8 type: null,9 target: getEventTarget,10 currentTarget: emptyFunction.thatReturnsNull,11 eventPhase: null,12 bubbles: null,13 cancelable: null,14 timeStamp: function(event) {15 return event.timeStamp || Date.now();16 },17 defaultPrevented: null,18 isTrusted: null19};20function SyntheticEvent(dispatchConfig, dispatchMarker, nativeEvent) {21 this.dispatchConfig = dispatchConfig;22 this.dispatchMarker = dispatchMarker;23 this.nativeEvent = nativeEvent;24 var Interface = this.constructor.Interface;25 for (var propName in Interface) {26 if (!Interface.hasOwnProperty(propName)) {27 continue;28 }29 var normalize = Interface[propName];30 if (normalize) {31 this[propName] = normalize(nativeEvent);32 } else {33 this[propName] = nativeEvent[propName];34 }35 }36 var defaultPrevented = nativeEvent.defaultPrevented != null ? nativeEvent.defaultPrevented : nativeEvent.returnValue === false;37 if (defaultPrevented) {38 this.isDefaultPrevented = emptyFunction.thatReturnsTrue;39 } else {40 this.isDefaultPrevented = emptyFunction.thatReturnsFalse;41 }42 this.isPropagationStopped = emptyFunction.thatReturnsFalse;43}44assign(SyntheticEvent.prototype, {45 preventDefault: function() {46 this.defaultPrevented = true;47 var event = this.nativeEvent;48 if (event.preventDefault) {49 event.preventDefault();50 } else {51 event.returnValue = false;52 }53 this.isDefaultPrevented = emptyFunction.thatReturnsTrue;54 },55 stopPropagation: function() {56 var event = this.nativeEvent;57 if (event.stopPropagation) {58 event.stopPropagation();59 } else {60 event.cancelBubble = true;61 }62 this.isPropagationStopped = emptyFunction.thatReturnsTrue;63 },64 persist: function() {65 this.isPersistent = emptyFunction.thatReturnsTrue;66 },67 isPersistent: emptyFunction.thatReturnsFalse,68 destructor: function() {69 var Interface = this.constructor.Interface;70 for (var propName in Interface) {71 this[propName] = null;72 }73 this.dispatchConfig = null;74 this.dispatchMarker = null;75 this.nativeEvent = null;76 }77});78SyntheticEvent.Interface = EventInterface;79SyntheticEvent.augmentClass = function(Class, Interface) {80 var Super = this;81 var prototype = Object.create(Super.prototype);82 assign(prototype, Class.prototype);83 Class.prototype = prototype;84 Class.prototype.constructor = Class;85 Class.Interface = assign({}, Super.Interface, Interface);86 Class.augmentClass = Super.augmentClass;87 PooledClass.addPoolingTo(Class, PooledClass.threeArgumentPooler);88};89PooledClass.addPoolingTo(SyntheticEvent, PooledClass.threeArgumentPooler);...

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emptyFunction.js

Source: emptyFunction.js Github

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1/​**2 * @flow3 * @copyright Prometheus Research, LLC 20144 */​5'use strict';6function emptyFunction() {7}8emptyFunction.toString = function() {9 return '<empty function>';10};11emptyFunction.thatReturnsTrue = function(): bool {12 return true;13};14emptyFunction.thatReturnsTrue.toString = function() {15 return '<empty function that returns true>';16};17emptyFunction.thatReturnsArgument = function<A>(arg: A): A {18 return arg;19};20emptyFunction.thatReturnsArgument.toString = function() {21 return '<empty function that returns argument>';22};...

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Using AI Code Generation

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1const { PlaywrightInternal } = require('playwright');2console.log(PlaywrightInternal.thatReturnsTrue());3const { PlaywrightInternal } = require('playwright');4console.log(PlaywrightInternal.thatReturnsFalse());5const { PlaywrightInternal } = require('playwright');6console.log(PlaywrightInternal.thatReturnsNull());7const { PlaywrightInternal } = require('playwright');8console.log(PlaywrightInternal.thatReturnsThis());9const { PlaywrightInternal } = require('playwright');10console.log(PlaywrightInternal.thatReturnsArgument());11const { PlaywrightInternal } = require('playwright');12console.log(PlaywrightInternal.noop());13const { PlaywrightInternal } = require('playwright');14console.log(PlaywrightInternal.assert());15const { PlaywrightInternal } = require('playwright');16console.log(PlaywrightInternal.valueFromEvaluate());17const { PlaywrightInternal } = require('playwright');18console.log(PlaywrightInternal.valueFromEvaluateHandle());19const { PlaywrightInternal } = require('playwright');20console.log(PlaywrightInternal.getExceptionMessage());21const { PlaywrightInternal } = require('playwright');22console.log(PlaywrightInternal.getExceptionMessage());23const { PlaywrightInternal } = require('playwright');24console.log(PlaywrightInternal.getExceptionMessage());25const { PlaywrightInternal } = require('playwright');26console.log(PlaywrightInternal.getExceptionMessage());27const { PlaywrightInternal } = require('playwright');28console.log(PlaywrightInternal.getExceptionMessage());

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Using AI Code Generation

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1const { ThatReturnsTrue } = require('playwright/​lib/​utils/​utils');2console.log(ThatReturnsTrue());3const { ThatReturnsFalse } = require('playwright/​lib/​utils/​utils');4console.log(ThatReturnsFalse());5const { ThatReturnsZero } = require('playwright/​lib/​utils/​utils');6console.log(ThatReturnsZero());7const { ThatReturnsNull } = require('playwright/​lib/​utils/​utils');8console.log(ThatReturnsNull());9const { ThatReturnsThis } = require('playwright/​lib/​utils/​utils');10console.log(ThatReturnsThis());11const { ThatReturnsArgument } = require('playwright/​lib/​utils/​utils');12console.log(ThatReturnsArgument());13const { Empty } = require('playwright/​lib/​utils/​utils');14console.log(Empty());15{}

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Using AI Code Generation

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1const { ThatReturnsTrue } = require('playwright/​lib/​utils/​utils');2const { ThatReturnsFalse } = require('playwright/​lib/​utils/​utils');3console.log(ThatReturnsTrue());4console.log(ThatReturnsFalse());5ThatReturnsTrue() and ThatReturnsFalse() methods of Playwright Internal utils6ThatReturnsTrue() method of Playwright Internal utils7ThatReturnsFalse() method of Playwright Internal utils

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Using AI Code Generation

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1const { Playwright } = require('playwright');2const playwright = new Playwright();3const browser = await playwright.chromium.launch();4const context = await browser.newContext();5const page = await context.newPage();6const result = await page.evaluate(() => {7 return Playwright.Internal.thatReturnsTrue();8});9console.log(result);10await browser.close();

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Using AI Code Generation

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1const { Playwright } = require('@playwright/​test');2const playwright = new Playwright();3const browser = await playwright.chromium.launch();4const context = await browser.newContext();5const page = await context.newPage();6const result = await page.evaluate(() => {7 return Playwright._internal.thatReturnsTrue();8});9console.log(result);

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Using AI Code Generation

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1const { ThatReturnsTrue } = require('playwright/​lib/​utils/​utils');2const { ThatReturnsFalse } = require('playwright/​lib/​utils/​utils');3const { ThatReturnsZero } = require('playwright/​lib/​utils/​utils');4const { ThatReturnsThis } = require('playwright/​lib/​utils/​utils');5const { ThatReturnsNull } = require('playwright/​lib/​utils/​utils');6const { ThatReturnsArgument } = require('playwright/​lib/​utils/​utils');7const { ThatReturnsNewError } = require('playwright/​lib/​utils/​utils');8const { ThatReturns } = require('playwright/​lib/​utils/​utils');9const { ThatReturnsFalse } = require('playwright/​lib/​utils/​utils');10const { ThatReturnsFalse } = require('playwright/​lib/​utils/​utils');11const { ThatReturnsFalse } = require('playwright/​lib/​utils/​utils');12const { ThatReturnsFalse } = require('playwright/​lib/​utils/​utils');13const { ThatReturnsFalse } = require('

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Using AI Code Generation

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1const { ThatReturnsTrue } = require('playwright/​lib/​internal/​utils');2console.log(ThatReturnsTrue());3const { ThatReturnsTrue } = require('playwright/​lib/​internal/​utils');4console.log(ThatReturnsTrue());5const { ThatReturnsTrue } = require('playwright/​lib/​internal/​utils');6console.log(ThatReturnsTrue());7const { ThatReturnsTrue } = require('playwright/​lib/​internal/​utils');8console.log(ThatReturnsTrue());9const { ThatReturnsTrue } = require('playwright/​lib/​internal/​utils');10console.log(ThatReturnsTrue());11const { ThatReturnsTrue } = require('playwright/​lib/​internal/​utils');12console.log(ThatReturnsTrue());13const { ThatReturnsTrue } = require('playwright/​lib/​internal/​utils');14console.log(ThatReturnsTrue());15const { ThatReturnsTrue } = require('playwright/​lib/​internal/​utils');16console.log(ThatReturnsTrue());17const { ThatReturnsTrue } = require('playwright/​lib/​internal/​utils');18console.log(ThatReturnsTrue());19const { ThatReturnsTrue } = require('playwright/​lib/​internal/​utils');20console.log(ThatReturnsTrue());21const { ThatReturnsTrue } = require('playwright/​lib/​internal/​utils');22console.log(ThatReturnsTrue());23const { ThatReturnsTrue } = require('playwright/​lib/​internal/​utils');24console.log(ThatReturnsTrue());25const { ThatReturnsTrue } = require('playwright/​lib/​internal/​utils');26console.log(ThatReturnsTrue());27const { ThatReturnsTrue } = require('playwright/​lib/​internal/​utils');28console.log(ThatReturnsTrue());

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Using AI Code Generation

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1const { PlaywrightInternal } = require('./​playwright-internal');2const playwrightInternal = new PlaywrightInternal();3playwrightInternal.thatReturnsTrue();4class PlaywrightInternal {5 thatReturnsTrue() {6 return true;7 }8}9module.exports = {10};

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StackOverFlow community discussions

Questions
Discussion

Jest + Playwright - Test callbacks of event-based DOM library

firefox browser does not start in playwright

Is it possible to get the selector from a locator object in playwright?

How to run a list of test suites in a single file concurrently in jest?

Running Playwright in Azure Function

firefox browser does not start in playwright

This question is quite close to a "need more focus" question. But let's try to give it some focus:

Does Playwright has access to the cPicker object on the page? Does it has access to the window object?

Yes, you can access both cPicker and the window object inside an evaluate call.

Should I trigger the events from the HTML file itself, and in the callbacks, print in the DOM the result, in some dummy-element, and then infer from that dummy element text that the callbacks fired?

Exactly, or you can assign values to a javascript variable:

const cPicker = new ColorPicker({
  onClickOutside(e){
  },
  onInput(color){
    window['color'] = color;
  },
  onChange(color){
    window['result'] = color;
  }
})

And then

it('Should call all callbacks with correct arguments', async() => {
    await page.goto(`http://localhost:5000/tests/visual/basic.html`, {waitUntil:'load'})

    // Wait until the next frame
    await page.evaluate(() => new Promise(requestAnimationFrame))

    // Act
   
    // Assert
    const result = await page.evaluate(() => window['color']);
    // Check the value
})
https://stackoverflow.com/questions/65477895/jest-playwright-test-callbacks-of-event-based-dom-library

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